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一款双口ram芯片程序加电路加资料·········(odt7026···············)

stm32的bootloader程序，基于Ymodem协议，通过Secure CRT串口实现IAP功能(stm32 the bootloader program, based on Xmodem protocol to implement IAP function via the serial port Securecrt)

蜂鸣器模仿报警声，基于51单片机的蜂鸣器模仿报警声(The buzzer to imitate the alarm sound, 51 SCM buzzer alarm based on imitation)

可以产生幅度、频率可调的方波，频率50hz到1M(Can produce the amplitude, frequency adjustable Fang Bo, frequency of 50Hz to 1M)

说明：  使用51单片机控制LED灯，实现交通灯功能。(The use of 51 single-chip computer to control the LED lights to achieve the function of traffic lights.)

TRF7960 source code contains the test code and reference materials

P.M.莫尔斯的《振动与声》经典之作。各种宏观的声学问题。(PM Morse, " Vibration and sound classic. A variety of macro-acoustic problems.)

用51单片机，使用AD芯片，达到雨越大，雨刷越快的效果(With 51 single chip microcomputer, the use of AD chip, the bigger the rain, the faster the wiper effect)

说明：  基于CC2530实现的手势传感器实现，包含zstack的组网工程（短地址组网）(The realization of gesture sensor based on CC2530, including the networking project of zstack)

51的贪吃蛇小游戏，没什么算法，多看就明白了(51 Snake Eating Game, there is no algorithm, you can see more clearly.)